F15
F16
F17
English
9. Maintenance
CLEANING AIR FILTER:
1.Unscrew 2 knob bolts and remove the air cleaner cover. Then remove a prefilter mounted inside the air cleaner cover.
(1)Knob Bolt
(2)Prefilter
(3)Inner Case
(4)Paper Filter
2.Wash the prefilter in fresh, non flammable cleaning solution (ex. warm soapy water) and then dry. (Clean the air filter once in a week.)
3.Exchange the paper filter element with new one in case it has been contaminated.
WARNING
•This prefilter is dry type.
•Never wash the prefilter in oleaginous cleaning solution.
•Do not clean a paper filter by striking it.
■FUEL FILTER
•A clogged fuel filter may cause poor acceleration of the engine. Check periodically to see if the filter is clogged with dirt. The filter can be taken out of the fueling port using a small wire hook. Disconnect the filter assembly from the fuel pipe and unhook the retainer to disassemble it. Clean the components with gasoline.
(1)Screen
(2)Element
(3)Holder
(4)Retainer
■SPARK PLUG
•The spark plug may gather carbon deposits on its firing end with reasonable use. Remove and inspect the spark plug every 25 hours and clean the electrodes as necessary with a wire brush. The spark gap should be adjusted to .025 in (0.6~0.7mm).
•Plug manufacturers recommend replacing the plug twice a year to avoid unexpected plug failure in a job.
REPLACEMENT PLUG IS A NGK CMR7H.
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